DNS NSAP RRs
RFC 1348
Document | Type |
RFC - Experimental
(July 1992; No errata)
Obsoleted by RFC 1637
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|
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Author | Bill Manning | ||
Last updated | 2013-03-02 | ||
Stream | Legacy | ||
Formats | plain text html pdf htmlized bibtex | ||
Stream | Legacy state | (None) | |
Consensus Boilerplate | Unknown | ||
RFC Editor Note | (None) | ||
IESG | IESG state | RFC 1348 (Experimental) | |
Telechat date | |||
Responsible AD | (None) | ||
Send notices to | (None) |
Network Working Group B. Manning Request for Comments: 1348 Rice University Updates: RFCs 1034, 1035 July 1992 DNS NSAP RRs Status of this Memo This memo defines an Experimental Protocol for the Internet community. Discussion and suggestions for improvement are requested. Please refer to the current edition of the "IAB Official Protocol Standards" for the standardization state and status of this protocol. Distribution of this memo is unlimited. Table of Contents Introduction ..................................................... 1 Background ....................................................... 1 NSAP RR .......................................................... 2 NSAP-PTR RR ...................................................... 2 REFERENCES and BIBLIOGRAPHY ...................................... 3 Security Considerations .......................................... 4 Author's Address ................................................. 4 Introduction This RFC defines the format of two new Resource Records (RRs) for the Domain Name System (DNS), and reserves corresponding DNS type mnemonic and numerical codes. This format may be used with the any proposal that has variable length addresses, but is targeted for CLNP use. This memo assumes that the reader is familiar with the DNS [3,4]. Background This section describes an experimental representation of NSAP addresses in the DNS. There are several reasons to take this approch. First, it provides simple documentation of the correct addresses to use in static configurations of CLNP compliant hosts and routers. NSAP support requires that a new DNS resource record entry type ("NSAP") be defined, to store longer Internet (i.e., NSAP) addresses. This resource record allows mapping from DNS names to NSAP addresses, and will contain entries for systems which are able to run Internet applications, over TCP or UDP, over CLNP. Manning [Page 1] RFC 1348 DNS NSAP RRs July 1992 The backward translation (from NSAP address to DNS name) is facilitated by definition of an associated resource record. This resource record is known as "NSAP-PTR", and is used in a manner analogous to the existing "in-addr.arpa". These RRs are intended for use in a proposal [6] by one of the members of the NOOP WG to address the next-generation internet. The NSAP RR The NSAP RR is defined with mnemonic NSAP and type code 22 (decimal). An NSAP (Network Service Access Protocol) number is a unique string to OSI transport service. The numbering plan follows RFC 1237 and associated OSI definitions for NSAP format. NSAP has the following format: <owner> <ttl> <class> NSAP <length> <NSAP-address> All fields are required. <length> identifies the number of octets in the <NSAP-address> as defined by the various national and international authorities. <NSAP-address> enumerates the actual octet values assigned by the assigning authority. Its format in master files is a <character- string> syntactically identical to that used in TXT and HINFO. The format of NSAP is class insensitive. NSAP RR causes no additional section processing. For example: foo.bar.com. IN NSAP 21 47000580ffff000000321099991111222233334444 host.school.de IN NSAP 17 39276f3100111100002222333344449876 The RR data is the ASCII representation of the digits. It is encoded as two <character-strings>, i.e., count followed by characters. The NSAP-PTR RR The NSAP-PTR RR is defined with mnemonic NSAP-PTR and a type code 23 (decimal). Its function is analogous to the PTR record used for IP addresses Manning [Page 2] RFC 1348 DNS NSAP RRs July 1992 [4,7]. NSAP-PTR has the following format: <NSAP-suffix> <ttl> <class> NSAP-PTR <owner> All fields are required. <NSAP-suffix> enumerates the actual octet values assigned by the assigning authority for the LOCAL network. Its format in master files is a <character-string> syntactically identical to that used in TXT and HINFO. The format of NSAP-PTR is class insensitive. NSAP-PTR RR causes no additional section processing. For example: In net ff08000574.nsap-in-addr.arpa: 444433332222111199990123000000ff NSAP-PTR foo.bar.com. Or in net 11110031f67293.nsap-in-addr.arpa: 67894444333322220000 NSAP-PTR host.school.de. The RR data is the ASCII representation of the digits. It is encoded as a <character-string>. REFERENCES and BIBLIOGRAPHY [1] Stahl, M., "Domain Administrators Guide", RFC 1032, NetworkShow full document text